Foundry

The melting factory has 8 induction furnaces with a capacity of 3 to 30 tons, so that pieces of up to 130 tons can be manufactured. The five large furnaces were installed in a row on a newly erected furnace platform. They are operated via a central fully electronic platform and are permanently controlled. The quantities of the required alloys for the individual qualities are calculated with modern computer aided systems. The reference quality is passed on to the furnaces as a target specification. The mixture specification contains the necessary raw-materials such as scrap, circulation material, alloys etc., which are needed to achieve a specified quality.

The casting procedure takes place mainly in casting pits for statically cast rolls, in centrifugal cast furnaces for centrifugally casted rolls and pipes as well as in casting boxes for form casted parts.

The foundry is also responsible for the annealing of the work-pieces to reduce the material tension and to carry out the thermal material treatment. Due to the specific requirements the foundry works in three shifts.

 

Capacities

Melting facilities

 

  • 8 electrical melting furnaces (induction), from 3 to 30 tons each


Casting facilities

  • static single poured and compound casts - single pieces up to a maximum cast weight of 130 tons, over a diameter of over 1,700 mm and 13 m length
  • horizontal/vertical centrifugal cast machines for single poured and compound cast pieces up to a barrel length of 6 meters
  • vertical spin casting machine for rolls up to 11,5 m length and 75 tons finish weight


Heat treating facilities

  • 17 gas-fired heat treatment furnaces

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